74717628 has 12 divisors (see below), whose sum is σ = 174341160. Its totient is φ = 24905872.

The previous prime is 74717627. The next prime is 74717653. The reversal of 74717628 is 82671747.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 74717628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74717627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3113223 + ... + 3113246.

It is an arithmetic number, because the mean of its divisors is an integer number (14528430).

Almost surely, 2^74717628 is an apocalyptic number.

It is an amenable number.

74717628 is an abundant number, since it is smaller than the sum of its proper divisors (99623532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74717628 is a wasteful number, since it uses less digits than its factorization.

74717628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6226476 (or 6226474 counting only the distinct ones).

The product of its digits is 131712, while the sum is 42.

The square root of 74717628 is about 8643.9359090636. The cubic root of 74717628 is about 421.1864186839.

The spelling of 74717628 in words is "seventy-four million, seven hundred seventeen thousand, six hundred twenty-eight".